Belt-gearing



A. H. DE VOE.

' BELT GEARING.

APPLICATION FILED OCT. 30. 1918.

1,347, 42, Patented July 27, 1920.

2 SHEETS-SHEET l.

INVENTOR A TORNEY A. H. DE VOE..

BELT GEARING.

APPLICATION FILED OCT. 30' 1918.

1,347,842, Patented July 27,1920.

2 SHEETSSHEET 2.

INVENTOR ATTORNEY UNITED STATES PATENT OFFICE.

ALBERT H. DE VOE, 0F WESTFIEED, NEW JERSEY, ASSIGNOR TO THE SINGER MANUFACTURING COMPANY, A CORPORATION OF NEW JERSEY.

Specification of Letters Patent.

Original application filed February 8, 1917, Serial No. 147,296. Divided and this application filed October 30, 1918. Serial No. 260,255.

To all whom it may concern:

Be it known that I, ALBERT H. DE Von, a citizen of the United States, residin at WVestfield, in the county of Union and tate of New Jersey, have invented certain new and useful Improvements in Belt-Gearing, of which the following is a specification, reference being had therein to the accompanying drawings.

This invention relates to an improved form of belt gearing for connecting a sewing machine with a source of power through the transmitting mechanism of a powerstand such as that shown in my copending application Serial No. 147,296, filed February 8, 1917, and of which this application is a division.

Among the objects of my invention are to provide a belt-gearing which is simple, which assures protection of the operator against contact with the moving parts while allowing of ready access to the belt, which will maintain the belt taut at all times, and which will allow the machine head to be tilted without shipping the belt. Further objects are to provide a brace between adjacent sections of the power-stand which will act as a support for the power-stand shafthanger, and to provide means for actuating the power-stand shaft from a pulley mount-i ed on said shaft in the hanger.

In its preferred form the invention comprises one or more columns secured to the floor, a duplex power-transmitter carried at the head of each column, a power-shaft for said transmitters, sewing machines tiltably mounted on each column, a belt connecting each machine with its power-transmitter, and pivotall mounted housings inclosing each belt. lV cans are provided when desired for maintaining the belts taut and for tilting the machines for inspection without shipping the belts. Adjacent columns are connected by a brace-bar, and intermediate two of said columns a hanger is mounted on said bar, said hanger carrying bearings for the power-shaft and a drive pulley therefor, and between shaft and the main drive shaft a belt is provided, said belt being provided with means for maintaining it at the proper tension.

In the accompanying drawings, Figure 1 is a front elevation of a power-stand. Figs. 2 and 3 are enlarged front and side elevations, respectively, of details of the hanger mechanism by which the power-shaft is supported and driven. Fig. 4: is a side elevation, partly in section, of a part of the power-stand. Fig. 5 is a detached view of one form of transmission belt housing. Figs. 6 and 7 are front and end views, respectively, of a preferred form of belt housing, and Fig. 8 is a sectional view of the duplex power-transmitting housing and its connection with a supporting column.

Referring to the drawings, 1 denotes a supporting column secured at its lower end to a floor in any preferred manner. Secured on opposite sides of the column are shelves 2, upon each of which is tiltably mounted a sewing machine head 3, which may be tilted by operation of lever 4, in the manner fully described in my copending application above mentioned. A duplex transmitter housing 5 has a central ortion 6 in which is mounted a power-shaft Trunnions 8 project from the portion 6 and are secured in a yoke 9 by screws 10,-and the yoke has a shank 11 which is adjustably held in the upper end of the column 1 by a set-screw 12. Transmission-belts 13 connect the balance-wheels of the machines with pulleys of the respective transmitters on opposite sides of the housing 5. Extensions 14: project from the lower part of housing 5 on opposite sides. A tubular housing incloses each belt 13 and comprises compleinentary sections 15 pivoted to an extension 14c at 16. The inner or lower housing section has one end of a brace rod or adjusting means 17 pivoted to it at 18, the other end of the rod being adjustably secured to column 1 by a clamp-screw 19. The outer housing section 15 normally rests by gravity on the inner one. In this form, when it is desired to remove or tilt the machine, the housing sections are opened or swung apart and the belt shiipped, which allows the machine to be move A preferred form of belt connection and housing is shown in Figs. 6 and 7. In this form a belthousing 20 is pivotally mounted on the transmitter housing extension at 21, one side of said housing being open as shown in Fig. 7. Near its lower end said housing carries idler-pulleys 22 mounted on a shaft 23. At the upper end of the hous ing 20 and at one side of its pivot 91 a socket 24 is "is? f iQi c s'pr -51 Patented July 27, 1920.

interposed between said socket and a lug 26 on the extension 14. The two branches of the belt 13 are led from the transmitter pulley over the idler-pulleys 22 and around I belt under the proper tension, and when the 32 for the power-sh machine is tilted or the belt shipped or replaced the spring yields to permit these operations.

As shown in Fig. 1, the adjacent faces of the transmitter-housings carried by adjoining columns are connected by a brace-bar 27 in the form of an inverted T-beam. Secured upon, this beam intermediate its ends by means of clamp-bolts 28 is a divided bracket-piece 29 having end flanges 30 to which are bolted the opposite flat sides 31 of shaft-hangers eagh sustaining a bearing inclosed within a box 33. Embracing the sides 31 of the hangers, in order'to inclose a housing space between them, is a sheetmetal band 34 secured thereto at one end and provided at its opposite end with lateral lugs 35 adapted to enter notches in the upper edges of catch-bars 36 hinged at 37 and normall maintained in locking position by means 0 the bolts 38 and wing-nuts 39 or by other suitable means. Fixed on the shaft 7 intermediate the bearings 32 is a pulley 40 formed with a series of"peripheral grooves entered by a corresponding series of convolutions of an endless belt, 41 passing over a similarly grooved pulley 42 upon a driving shaft 43 suitably mounted within the bearing of a hanger 44 attached to theceil- :ing in a manner well known. Rigidly mounted in suitable lugs 45 of this hanger isthe vertical guide-bar 46 upon which is slidingly fitted by a spline and groove connection the sleeve 47 provided with a lateral stud 48 carrying the grooved belt-wheel 49 entering a loop of the driving belt 41 extending from the opposite end grooves of the pulley 42. The sleeve '47 and wheel 49 are of such weight, or may be so weighted, that-the driving belt 41 is given a uniform tension of the required amount to produce the necessary driving. impulse between the driving shaft 43 and the power-shaft 7 In the operation of the power-stand the wheel 49 acts as an idler for the driving belt 41, and its weight maintains the .tension of the belt constant. The belt 13 between each power-transmitter and its machine having been positioned and adjusted, the lower or inner half 15 of the belt housing is properly located with respect to the invention, what I claim herein isft 7, each bearing being against the pressure of spring 25. The machine head can also be tilted without unshipping the belt, by reason of the pivotal and yielding mounting of the belt housing, which maintains the belt taut in all positions of the housing as the drive wheel of the machine moves with the head.

It is obvious that numerous modifications of the described structure are possible within the scope of the a pended claims.

Having thus set orth the nature of the 1. In combination, a sewing machine stand comprising an upright column carryingintermediate its head and foot a sewing machine shelf or table, a power-transmitter including a belt-wheel and a frame sustained at the head of said column and provided with a suitable housing for said belt-wheel, and a belt-housing pivotally sustained by and depending from the transmitter-housi and adapted to inclose therein a belt leading from the transmitter beltwheel to a sewing machine sustained by sa1d shelf or table.

2. In combination, a sewing machine stand comprising an upright column carrying intermediate its head and foot a sewing machine shelf or table, a power-transmitter including a belt-wheel and a frame sustained at the head of said column and provided with a suitable, housing for said belt-wheel, a belt-housing pivotally sustained by the transmitter housing and adapted to inclose therein a belt leading from the transmitter belt-wheel to a sewing machine sustained by said shelf, idlerwheels sustained at the free end of said belt-housing and adapted to engage said belt, and a spring for retracting said belthousing to maintain the engagement of the belt with said idler-wheels.

3. In combination, a sewing machine stand comprising an upright column provided intermediate its head and foot with sewing machine supporting means, a powertransmitter including a belt-wheel and a frame sustained at the head of said column, a belt leadingfrom said belt-wheel to the sewing machine sustained by said supporting means, and idler-wheels sustained by the transmitter-frame and adapted to maintain said belt taut.

4. A belt gearing comprising a powertransmitter, a housing therefor, a driven pulley, a belt connection between said transmitter and pulley, a' housing for said belt pivotally connected to said transmitterhousing, and elastic means for simultaneously tightening said belt and positioning the belt-housing.

5. A belt gearing comprising a power- 130 transmitter, a housing therefor, a driven pulley, a belt connection between said transmitter and pulley, a movable belt-housing, idler-wheels for said belt carried by said housing, and means for moving said housing to thereby tighten said belt.

6. In combination, a power-transmitter, a housing therefor, a movable driven wheel, a belt connecting said transmitter and wheel, a housing for said belt, idler-wheels for said belt carried by said belt-housing, and yielding means for maintaining said belt taut in all positions of said movable wheel.

7 In combination, a power-transmitter, a housing therefor, a movable driven wheel, a belt connecting said transmitter and wheel, a movable housing for said belt, idler- Wvheels for said belt carried by said latter housing, and means for moving said belthousmg away from sald movable wheel, to

- thereby maintain said belt taut.

8. In combination, a power-transmitter, a housing therefor, a driven wheel, a belt connecting said transmitter and wheel, a belt-housing pivotally mounted on said transmitter-housing, idler-wheels for said belt carried by the belt-housing, and yielding means for urging said belt-housing away from said driven wheel.

9. In combmation, a power-transmitter,

' a housing therefor, a movable driven wheel,

a belt connecting said transmitter and wheel, a belt-housing pivotally mounted on said transmitter-housing, idler-wheels for said belt carried by the belt-housing, and a spring carried by said housings for urging said, belt-housing away from said driven wheel.

10. In combination, a tiltable sewing machine head, apower-transmitter, a belt connecting said head and transmitter, means for inclosing said transmitter and belt, and means carried by said first means for maintaining said belt taut in all positions of the machine head.

11. In combination, a tiltable sewing machine head, a power-transmitter, a housing therefor, a belt connecting said head and transmitter, and means pivotally connected to said housing for inclosing said belt and maintaining the same taut.

12. In combination, a supporting column, a power-transmitter adjustably carried thereby, a housing therefor, a sewing machine head tiltably mounted on said column, a belt connection between said transmitter and head, and a belt-housing movably carried by said transmitter-housing.

13. In combination, a sewing machine stand composed of a plurality of connected units each comprising an upright column carrying intermediate its head and foot a sewing machine shelf or table and sustaining upon its head a power-transmitter alined with a transmitter of an adjacent column, a brace-beam rigidly connecting the heads of two adjacent columns, a hanger sustained by said brace-beam and provided with a shaft bearing alined with the adjacent transmitters, a power-shaft journaled in said bearing and entering and operatively connected with a rotary element of each of said transmitters, and a pulley mounted upon said shaft adjacent the hanger-bearing and by means of which said shaft is driven.

14. In combination, a plurality of columns, sewing machines carried thereby, powertransmitters on said columns, a power-shaft for said transmitters, belt connections between said transmitters and said machines, a brace-bar between said columns, a hanger for said power-shaft carried thereby, a main-shaft, a hanger therefor, a belt connection between said shafts, and means carried by said latter hanger for maintaining said belt taut.

In testimony whereof I have signed my name to this specification.

ALBERT H. DE VOE. 

